Is it true that by doing like 4 sets of 60-80 punches while holding 1/2 kg for each arm that you increase your punching strength and build some mass at the same time?
that's essentialy like wearing some heavy gloves. It won't give you much, if any size.
If you want to get better at punching, join some MA class.. punching with weights in your hands is really just weird. I don't care what Rocky did.
A friends friends are boxers and he wants to get into it and was telling me they punch with weights for ages and when there not punching with weights every one of there punches is like king hits lol
I'm not really sure if punching with weights will build up some mass. And I agree that in doing so will build up more speed, not necessarily power. Pushing up with clenched knuckles might do more than punching with weights if power and strength is concerned.